Chem 511 Unit 5 Review: Covalent Bonding

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons in order to have eight electrons in their valence shell, achieving a stable electron configuration.

Front

Which atom does not obey the octet rule?

Back

Hydrogen (H) does not obey the octet rule as it can only hold a maximum of 2 electrons in its valence shell.

Front

How many lone pairs and bonds does CO₂ have?

Back

CO₂ has 4 lone pairs and 2 bonds.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What charge does the atom with higher electronegativity have when electrons are unequally shared?

Back

The atom with higher electronegativity will have a partial negative charge.

Front

What is a triple bond?

Back

A triple bond is a type of covalent bond where three pairs of electrons are shared between two atoms.

Front

How many electrons are shared in a double bond?

Back

In a double bond, two pairs of electrons (4 electrons) are shared between two atoms.

Front

What is the formula for dichlorine monoxide?

Back

The formula for dichlorine monoxide is Cl₂O.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds occur when electrons are unequally shared, while nonpolar covalent bonds occur when electrons are equally shared.